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gptkbp:instanceOf
|
gptkb:star
|
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gptkbp:age
|
~242 million years
|
|
gptkbp:alsoKnownAs
|
gptkb:Sirius
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gptkbp:apparentMagnitude
|
-1.46
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gptkbp:catalogueNumber
|
gptkb:BD-16_1591
gptkb:Gliese_244
gptkb:FK5_208
gptkb:GC_8896
gptkb:HD_48915
gptkb:HIP_32349
gptkb:HR_2491
gptkb:SAO_151881
gptkb:WDS_J06451-1643
ADS 5423
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gptkbp:color
|
white
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gptkbp:constellation
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gptkb:Canis_Major
|
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gptkbp:culturalSignificance
|
gptkb:Dog_Star
featured in Greek mythology
important in Polynesian navigation
associated with Egyptian calendar
associated with heat of summer (dog days)
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gptkbp:declination
|
-16° 42′ 58″
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gptkbp:diameter
|
1.711 solar radii
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gptkbp:discoveredBy
|
ancient astronomers
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gptkbp:distanceFromEarth
|
8.6 light years
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gptkbp:hasCompanion
|
gptkb:Sirius_B
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gptkbp:hasExoplanet
|
no known exoplanets
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gptkbp:hasViewOf
|
gptkb:Northern_Hemisphere
gptkb:Southern_Hemisphere
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
Seirios
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gptkbp:luminosity
|
25.4 times Sun
|
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gptkbp:mass
|
2.02 solar masses
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gptkbp:metallicity
|
[Fe/H] = +0.5
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gptkbp:nearestNeighborStar
|
gptkb:Alpha_Centauri
gptkb:Betelgeuse
gptkb:Procyon
|
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gptkbp:notableFor
|
brightest star in night sky
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gptkbp:orbitalPeriodWithCompanion
|
50.1 years
|
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gptkbp:parallax
|
379.21 mas
|
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gptkbp:partOf
|
gptkb:Sirius_binary_system
|
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gptkbp:properMotionRA
|
-1223.07 mas/yr (Dec)
-546.01 mas/yr (RA)
|
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gptkbp:rightAscension
|
06h 45m 08.9s
|
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gptkbp:rotationPeriod
|
16 km/s
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gptkbp:spectralType
|
A1V
|
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gptkbp:temperature
|
9940 K
|
|
gptkbp:visibleSeason
|
winter (Northern Hemisphere)
|
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gptkbp:bfsParent
|
gptkb:Pretty_Scary_Silver_Fairy
|
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gptkbp:bfsLayer
|
8
|